<!--
 * @Description: 
 * @Author: 赵华宇
 * @Date: 2025-04-20 17:43:57
 * @LastEditors: 赵华宇
 * @LastEditTime: 2025-04-20 17:50:13
-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CSS引入</title>
    <!-- link引入外部样式表 rel:关系，样式表 -->
    <link rel="stylesheet" href="./my.css">
</head>
<body>
    <p>CSS引入</p>
    <div>这是一个div标签</div>
    <!-- 行内写法 -->
    <div style="color:red;font-size:20px;">这是div标签</div>
</body>
</html>